72196937 has 2 divisors, whose sum is σ = 72196938. Its totient is φ = 72196936.

The previous prime is 72196933. The next prime is 72196951. The reversal of 72196937 is 73969127.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72097081 + 99856 = 8491^2 + 316^2 .

It is a cyclic number.

It is not a de Polignac number, because 72196937 - 2² = 72196933 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72196933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36098468 + 36098469.

It is an arithmetic number, because the mean of its divisors is an integer number (36098469).

Almost surely, 2^72196937 is an apocalyptic number.

It is an amenable number.

72196937 is a deficient number, since it is larger than the sum of its proper divisors (1).

72196937 is an equidigital number, since it uses as much as digits as its factorization.

72196937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 142884, while the sum is 44.

The square root of 72196937 is about 8496.8780737398. The cubic root of 72196937 is about 416.3957206678.

The spelling of 72196937 in words is "seventy-two million, one hundred ninety-six thousand, nine hundred thirty-seven".